Improvement



' end of the link E.

"CHARLES culminant), or MALDE N, MASSACHUSETTS.

:tMfPRiov-fEMaNrr im 'suenen-WORKERS.

'Specification `forming'part-orf vLetters Patent No. 15131651, datedJunc2,1874.;:applicatloniiled nprnlidliem.

To all whom it may concern:

Be it known that LCHARLE'S 'GHATFIELE of Malden, in the county 'ofMiddlesex and State of Massachusetts, have invented an Improved Devicefor Operating Blinds, of which the following is a specification:

This invention relates to an improved device for operating window orother blinds, the object of which is to obviate the necessity of openingthe window to either operate the blind or to fasten it when shut oropen, while at the same time an easy, convenient, and safe mode ofoperating the blind is accomplished.

The invention consists of a curved arm pivoted at one of its ends to oneend of a link, which, at its other end, is pivoted to abracket or armsecured to the inside oi' the blind, near its bottom, and aboutintermediate of its width, the arm passing through a staple and a sliding plate secured to the window-seat, the blind being fastened, when shutor open, by a doubleacting catch on the windowseat, that catches in oron the link or the arm, and thus prevents the blind from being opened,shut, or moved in any way by any one on the outside of the window.

Figure 1 in the drawings represents a horizontal cross-section of awindow-frame and sash, with my improved operating device in plan view,the blind being open, and showing in dotted lines the blind as shut;Figs. 2, 3, and 4, vertical cross-sections in planes of lines a: w, y y,and z z, respectively, Fig. l; Fig. 5, a modication of the fasteningdevice hereinafter described.

A in the drawings represents my improved device for operating blinds; B,the frame-work of the window, and C the window-sash; D, the blind 5 E,an arm, pivoted or hinged to one The link E at its other end is hingedto the bracket or arm F, which is rigidly fastened to the blind D. Thearm E and linkE are so hinged as to move in a horizontal plane. This armE is bent or curved, as shown, so that in its movements in thesashframe, when operating the blind, it shall project but a slightdistance from the side edge of the window-Sash; also, it adapts itselfto bend roundthe corner of the window-frame outside of window, when theblind is open,

and when closed, as sho-wn -by-'dotted lines Fig. 1, it swings round themoldings of vthe window inside, and is out 'of the way. A thumb-piece,h, is on the other end 4of arm to serve as a handle. The arm E isconfined, and in its operation moves in a loop or staple, G, ofsuficient width to allow for the lateral movement of the arm. The stapleG is secured by screws or otherwise to the window-seat H, and the bottomof Window-sash is cut away sufficiently to allow for it. I, a platecovering the opening in the window-Sash, and extending down to thewindow-seat, and adapted by the slot b and screws o to slidelongitudinally as the arm E is moved or operated by the shoulder a,which fits loosely over the arm. K, a double-acting catch, arranged tomove vertically on a pin, at f, in a plate, g, secured to window-seat.On this catch K is a tongue, L, to t in a notch, M, in link E', Securingthe blind when shut, and when the blind is open the catch fastens it, byplacing the end h of arm E in the shoulder l of the catch K. A pin ordetent, m, projecting from and below the catch K, ande11teringasocket,n,in a plate, o, secured to Window sill or seat H,prevents it from moving horizontally. The bracket or arm F, by extendingin a line diagonally to or from the blind, as shown, can be secured tothe blind at Such a distance from the hinge that the blind, when locked,if open or shut, is held rigidv and lirm, and cannot be moved from theoutside of window.

' The arm F can be of various lengths, as circumstances require, as ahook, staple, or eye, for instance, but arranged as shown is preferable.

To operate the device-to close the blind, for instance, the Window beingshuttake hold ofthe end of arm E, and, pulling it through the Staple Guntil the link E is in position shown in dotted lines in Fig. 1, and theblind closed, press down the catch, which has previously been raised,and the tongue L, tting in the notch M in the link E', securely fastensthe blind. To open, raise the catch, and push the link and then the armthrough the staple, until the blind is fully open. When lowering thecatch in place, press the end of arm in the shoulder in the catch andthe blind is secure.

The window can be raised and lowered Without interfering in any mannerWith the operation of the device. y

In Fig. 5 is a modification of the catch o fastening device, andillustrates the mode I intend to adopt for practically Working mydevice.

The catch K swings vertically in the bearing P in a plate, g, firmlysecured to the Window-seat, and when the blind is shut it locks in thejoint of link M and the arm E at R, and, in connection with the staple,securely fastens the blind from being opened 5 and to fasten the blindwhen open, the end h of arm E rests in the shoulder in the plate.

Having thus described my invention, What I claim, and desire to secureby Letters Patent, is-

1. A curved arm, E, and link E', connected together and attached to ablind or shutter, substantially as described, and a, double-aetingcatch, K, fastened to the Window-sill, all constructed and combined tooperate as set forth.

2. In combination with the curved arm, link, and catch, either thestaple G or the slide I, or both, arranged to operate substantially asdescribed.

3. In a catch for the purposes herein set forth, provided with a. pin ordetent, m, the tongue L or shoulder l, or both, substantially as hereindescribed, for the purpose specified.

The above specification of my invention signed by me this 21st day ofFebruary, A. D. 1874. 4

CHARLES GHATFIELD.

Witnesses:

EDWIN W. BROWN, C. A. PEAsn.

